Japan Geoscience Union Meeting 2014

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Symbol B (Biogeosciences) » B-PT Paleontology

[B-PT24_29PO1] Evolution of Chemosynthetic Ecosystem in Earth History

Tue. Apr 29, 2014 6:15 PM - 7:30 PM Poster (3F)

Convener:*Jenkins Robert(School of Natural System, College of Science and Engineering, Kanazawa University), Hiromi WATANABE(Japan Agency for Marine-Earth Science and Technology), Takami Nobuhara Takami(Science Education (Geology), Faculty of Education, Shizuoka University), Ryuichi Majima(Faculty of Education and Human Sciences, Yokohama National University)

6:15 PM - 7:30 PM

[BPT24-P03] Cretaceous chemosynthetic communities in Japan

*Robert JENKINS1 (1.School of Natural System, College of Science and Engineering, Kanazawa University)

Keywords:chemosynthetic community, whale bone, sunken wood, hydrocarbon seep, hydrothermal vent, cold seep

The earliest occurrences of many molluscan genera, which are living in modern chemosynthetic ecosystem, were in the late Mesozoic. In addition, the oldest occurrences of chemosynthetic communities on decomposed vertebrate bones and sunken-drifted wood were in Cretaceous. Japanese Islands are located at junction of several continental and oceanic plates since hundreds of millions of years ago and provide many important material to establish evolutionary history of modern-type chemosynthetic ecosystems. Here I review Cretaceous chemosynthetic ecosystems with special focus on Japanese material.